Power-transmitting mechanism



April 1o, 192s.

R. B. BAGBY POWER TRANSMITTING MECHANISM Filed Oct. 5, 1922 2 Sheets-Sheet l April 1o, 192s. 1,665,835

R. B. BAGBY l POWER TRANSMITTING MECHANISM Filed oct. s, 1922 2 sheets-sheer 2 s w a o l 1\ Q 1: w O

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Patented Apr. 10, 1928.

UNITED STATES PATENT OFFICE.

RALPH B. BAGBY. OF CEDAR RAPIDS. IOWA, ASSIGNOR TO J. G. CHERRY COMPANY, OF CEDAR RAPIDS, IOYV., CORPORATION OF IOW'A.

POWER-TRANSMITTING MECHANISM.

Application filed October 5, 1922.

This invention relates to power transmitting mechanism, shown, by way of example, in the present instance, as applied to apparatus for Pasteurizing.l cooling and ripening milk, cream, and the like, and has for its principal object to provide an improved driving mechanism for the heat interchanging coil in which the gearing will be maintained in proper alignment regardless of '10 the wabbling of the coil shaft.

A further object of the invention is to provide a transmission in which the gearing is Carried by a rigid support mounted independentlyY of the coil shaft and the drive 5 is communicated to the shaft through a flexible clutch or coupling that leaves the shaft free to wabble without affecting the gearing.

Further objects of the invention will become apparentas the description is read in connection with the accompanying drawings illustrating a selected embodiment of the invention, and in which Fig. 1 is a sectional view of a portion of the heat interchanging coil, the head of the liquid container and the transmission gearing.

Fig. 2 partly Fig. 1.

Fig. 3 is an exploded view of the flexible clutch or coupling used between the source of power and the transmission gearing. and

Fig. 4 is an exploded view of the liexible clutch or coupling between the transmission gearing and the heat interchanging coil shaft.

Referring to the drawings, indicates the outer portion of the head of the container which may be either metal or wood, 11 is a cork or other filler, and .12 is the inner lining. The coil shaft 123 has the coil 14 connected therewith and is screw-threaded to a coil shaft nipple 15 which passes through the head of the receptacle. The coil shaft nipple is preferably journaled in the bearing including the flanged sleeve 16 which is threaded at its outer end to receive the plate 1T and at its inner end to receive the packing gland 19 by which the packing 2() is compressed to make a tight joint with the nipple.

A gear casingr 21 is secured to the head of the receptacle by bolts 22 or in any other suitable manner, and is divided on the line is a view partly in. elevation and in section taken at right angles to Serial No. 592,462.

23 to form a removable cover 24 which is secured thereto by bolts 25 (F ig. 2). The casing and the cover are formed with semicylindrical bearings 26 and 27 which are suitably 29 and 30 of the gear hub 31. The bore of this hub is greater in diameter than the coil shaft nipple 15 and surrounds it with clearance. The hub 31 is equipped with a gear body 32, which meshes with the worm 33 iournaled in the cover 24. Preferably the worm is carried b y a shaft 34 which is journaled in ball bearings 35 and 36. The inner race of the bearing 36 is clamped between the collar 37 and the nut 38. The inner race of the bearing 35 is forced against the collar 39 by a flanged ringe 40 which telescopes with a double flange ring 41 to communicate the thrust of the worm to the ball bearing 42. The outer flange 43 of the ring` 41 lies against the end portion of the cover and is secured thereto by bolts 44 which also hold a closure 45 in place. A similar closure 46 is secured to the opposite end of the cover by bolts 47 and perforated at 48 to form a passage for the end of the shaft 34. A nut 38 secures the ring 40 in place.

From this it will be seen that the transmission gearing is mounted in a rigid casing and is sulr ported independently of the coil shaft nipple. Preferably the easing forms a closure for the gearing, but many `of the advantages of the invention can be obtained by substituting a suitable frame for the casing shown. With the gearing arranged in this way and the drive communicated to and from it through suitable flexible couplings or clutches there is no trouble with gears getting out of alignment or otherwise shifting so as to give improper contact.

0n account of the deflection of the coil shaft 13 and the flexibility of the bearing in the head of the machine, the coil shaft and the coil shaft nipple do not rotate about their axis, but wabble slightly. To take care of this, T provide a flexible clutch or coupling best illustrated in Fig. 4. The collar 49 is secured on the coil shaft nipple by set screws 50 or other suitable fasteners and presents two or more teeth 51 for engagement with the similar teeth 52 on the end 30 of the worm g-earfhub. The hub being properly .lined with babbitt or other bearing l metal 2S and receive the tubular portions 'complemental ribs -cooling liquid.

supported in its bearing in the casing, and revolving about the coil shaft nipple l5 with ample clearance will communicate the driving force to the collar 49, regardless of any Wabbling of the coil shaft nipple, and Without in any way straining or otherwise affecting the operation of the transmission gearing.

The driving power may be received from any suitable source and for illustration I have shown a motor 53 (Fig. 2) having a shaft 54 connected to the shaft 34 by a flexible-clutch or coupling best illustrated in Fig. 3. Two L-shaped collars 56 and 57 are keyed or otherwise secured to the respective shafts 5ft and 34 and have, in their adjacent faces, grooves 58 and 59 to receive 60 on an intermediate disc 62. This coupling vvill permit the driving shaft 54 to Wabble Without in any Way straining or otherwise affecting the operation of the shaft 3 4 and the gearing.

The free end of the coil shaft nipple (Fig. l) is equipped with a suitable stuffing box 66 which receives a pipe 6T supported by the Vbracket 68 and connected by an elbow 69 with a supply pipe 70 for heating or The bracket G8 is conveniently secured to the gear casing'QI by bolts 7l.

The cover 2l may be equipped With an opening 72 closed by a plug 73 to facilitate oiling or greasing the gearing.

From the foregoing it will be clear that I have provided a novel construction that will maintain t-he transmission gearing in proper alignment and transmit the driving power from the driving shaft or other source to the coil shaft efficiently and smoothly. The gearing being supported in a casing or frame entirely independent of the driving shaft or the coil shaft, it is not affected by the movement of these shafts and will remain in proper alignment and relation. The flexible clutches or'couplings described are preferred, but other forms may be used if desired.

I am aware that changes may be made in the form, construction and arrangement of the invention, as set forth in the selected embodiment herein, Without depart-ing from the scope or sacrificing any of its material advantages, and I therefore reserve the right said Worm gear,

Aa Worm mounted independently of to make all such changes as fairly fall Within the scope of the following claims.

I claim:

l. In combination, a coil shaft free -to wabble, a frame, a hub supported in the frame, a Worm gear fixed to said hub, a nipple extending through said hub and connected to said coil shaft, means for supporting said nipple independently of said. hub, a worm communicating With said worm gear and mounted independently thereof, a mo tor, flexible means connecting the motor and the Worm', and means arranged on said hub and said nipple for rotating said coil shaft,

whereby any Wabbling mot-ion of the coilshaftwill not he transmitted to the worm, gear or said other shafts.

2. In combination, a eoil shaft free to Wabble, a frame, a hub having a central opening therethrough supported in said frame, a Worm gear fixed to said hub, a nipple connected to said coil shaft and extending through said opening, means for supporting the nipple independently of said hub, a Worm mounted independently of said worin gear and said nipple for operating a drivenV shaft, a flexible coupling between said driven shaft and said Worm, and means including toothed members fixed to said hub and tosaid nipple to rotate said coil shaft whereby any wabbling movement of the coil shaft is prevented from being transmitted to said gear, Worm or drive shaft.

3. In combination, a hollow coil shaft free to ivabble and adapted to have a fluid fioiv therethrough, a frame, a hub mounted in said frame, a hollow nipple extending through said frame and connected to said coil shaft, a Worm gear fixed to said hub. said Worm gear to drive the same, a bracket connected to the frame, a pipeline connected to a fluid supply and supported by said bracket and communie; ting with said nipple, a driving shaft, a flexible coupling connecting said driving shaft and said Worin, and flexible means connected to said hub and to said nipple for preventing anyavabbling of the coil shaft from being transmit-ted to the gear Worm or driving shaft.

' RALPH B. li GBY. 

